CN1012295B - 中央处理器代表无判优功能外设进行判优的存储器直接存取访问判优设备 - Google Patents

中央处理器代表无判优功能外设进行判优的存储器直接存取访问判优设备

Info

Publication number
CN1012295B
CN1012295B CN88100963A CN88100963A CN1012295B CN 1012295 B CN1012295 B CN 1012295B CN 88100963 A CN88100963 A CN 88100963A CN 88100963 A CN88100963 A CN 88100963A CN 1012295 B CN1012295 B CN 1012295B
Authority
CN
China
Prior art keywords
arbitration
dma
computer system
bus
passage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CN88100963A
Other languages
English (en)
Chinese (zh)
Other versions
CN88100963A (zh
Inventor
依安·A·康希利奥
杰弗里·A·哈索恩
彻斯特·阿斯布里·黑斯
约格·埃杜亚多·兰塔
朗格·D·古元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of CN88100963A publication Critical patent/CN88100963A/zh
Publication of CN1012295B publication Critical patent/CN1012295B/zh
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
    • G06F13/362—Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control
    • G06F13/3625—Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control using a time dependent access
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/28—Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal
    • G06F13/30—Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal with priority control
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
    • G06F13/368—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control
    • G06F13/374—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control using a self-select method with individual priority code comparator
CN88100963A 1987-03-27 1988-02-25 中央处理器代表无判优功能外设进行判优的存储器直接存取访问判优设备 Expired CN1012295B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3078887A 1987-03-27 1987-03-27
US030,788 1987-03-27

Publications (2)

Publication Number Publication Date
CN88100963A CN88100963A (zh) 1988-12-28
CN1012295B true CN1012295B (zh) 1991-04-03

Family

ID=21856040

Family Applications (1)

Application Number Title Priority Date Filing Date
CN88100963A Expired CN1012295B (zh) 1987-03-27 1988-02-25 中央处理器代表无判优功能外设进行判优的存储器直接存取访问判优设备

Country Status (19)

Country Link
EP (1) EP0283580B1 (fr)
JP (1) JPH0724044B2 (fr)
KR (1) KR950008228B1 (fr)
CN (1) CN1012295B (fr)
AR (1) AR244899A1 (fr)
AT (1) ATE75865T1 (fr)
BE (1) BE1001290A4 (fr)
BR (1) BR8800739A (fr)
CA (1) CA1299295C (fr)
DE (1) DE3778877D1 (fr)
ES (1) ES2032288T3 (fr)
FR (1) FR2613096A1 (fr)
GB (1) GB2202975B (fr)
GR (1) GR3004930T3 (fr)
HK (1) HK65392A (fr)
IT (1) IT1217359B (fr)
MY (1) MY103351A (fr)
NL (1) NL185312C (fr)
SG (1) SG67992G (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7089344B1 (en) * 2000-06-09 2006-08-08 Motorola, Inc. Integrated processor platform supporting wireless handheld multi-media devices
JP2010165175A (ja) * 2009-01-15 2010-07-29 Internatl Business Mach Corp <Ibm> バスの使用権を制御する装置および方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603935A (en) * 1969-05-12 1971-09-07 Xerox Corp Memory port priority access system with inhibition of low priority lock-out
IT971304B (it) * 1972-11-29 1974-04-30 Honeywell Inf Systems Sistema di accesso a priorita variabile dinamicamente
US4281381A (en) * 1979-05-14 1981-07-28 Bell Telephone Laboratories, Incorporated Distributed first-come first-served bus allocation apparatus
US4371932A (en) * 1979-07-30 1983-02-01 International Business Machines Corp. I/O Controller for transferring data between a host processor and multiple I/O units

Also Published As

Publication number Publication date
DE3778877D1 (de) 1992-06-11
HK65392A (en) 1992-09-11
BE1001290A4 (fr) 1989-09-19
FR2613096A1 (fr) 1988-09-30
GB2202975B (en) 1991-09-25
GR3004930T3 (fr) 1993-04-28
NL185312B (nl) 1989-10-02
GB8728921D0 (en) 1988-01-27
NL8800737A (nl) 1988-10-17
KR880011679A (ko) 1988-10-29
GB2202975A (en) 1988-10-05
MY103351A (en) 1993-06-30
SG67992G (en) 1992-09-04
JPH0724044B2 (ja) 1995-03-15
JPS63244161A (ja) 1988-10-11
KR950008228B1 (ko) 1995-07-26
NL185312C (nl) 1990-03-01
EP0283580B1 (fr) 1992-05-06
CA1299295C (fr) 1992-04-21
ATE75865T1 (de) 1992-05-15
IT8819946A0 (it) 1988-03-25
IT1217359B (it) 1990-03-22
BR8800739A (pt) 1988-10-04
CN88100963A (zh) 1988-12-28
ES2032288T3 (es) 1993-02-01
AR244899A1 (es) 1993-11-30
EP0283580A1 (fr) 1988-09-28

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